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http://www.openoffice.org/issues/show_bug.cgi?id=105898
Issue #|105898
Summary|[sal] LD_PRELOAD broken due to -Bsymbolic-functions
Component|udk
Version|DEV300m58
Platform|All
URL|
OS/Version|All
Status|NEW
Status whiteboard|
Keywords|
Resolution|
Issue type|DEFECT
Priority|P3
Subcomponent|code
Assigned to|mst
Reported by|mst
------- Additional comments from m...@openoffice.org Wed Oct 14 11:16:27 +0000
2009 -------
issue 85679 introduced the usage of the linker flag -Bsymbolic-functions on
unxlng platforms.
unfortunately this breaks LD_PRELOAD, and thus valgrind (which only works if
libsalalloc_malloc.so is in LD_PRELOAD):
==23266== Address 0xbd2b538 is 8 bytes before a block of size 28 alloc'd
==23266== at 0x4CA1FDE: malloc (vg_replace_malloc.c:207)
==23266== by 0x4CBB624: rtl_allocateMemory (in
/so/ws/DEV300/unxlngi6/lib.m58/libsalalloc_malloc.so.3)
==23266== by 0x90808BB: (within
/export/home/ms/inst/SO_m58_DEV300_li/opt/openoffice.org/basis3.2/program/libtlli.so)
==23266== Invalid read of size 4
==23266== at 0x6D8C1B1: rtl_freeMemory (in
/export/home/ms/inst/SO_m58_DEV300_li/opt/openoffice.org/ure/lib/libuno_sal.so.3)
==23266== by 0x6D74630: rtl_uString_release (in
/export/home/ms/inst/SO_m58_DEV300_li/opt/openoffice.org/ure/lib/libuno_sal.so.3)
so, in the first case, rtl_allocateMemory is properly found in
libsalalloc_malloc.so, but in the second case (from the same session!),
rtl_freeMemory is found in libuno_sal.so.
of course the office will segfault during startup under such conditions.
so our build results in a libsalalloc_malloc.so which is in practice unusable.
to solve this we could either
1) special-case sal and link without -Bsymbolic-functions
2) simply not build a broken libsalalloc_malloc any more, so if you want to
valgrind, rebuild sal:
(cd rtl/source && dmake killobj) && build -- ALLOC=SYS_ALLOC
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